Physics question and answers for June 17, 2024
- Q A rightward force of 302 N is applied to a 25 6-kg crate to accelerate it across the floor. The coefficient of friction between the crate and the floor is...
- Q The children had been splashing in the pool all day. Their father was surprised that he could drag the plastic wading pool over, the wet grass if he gave it...
- Q A 4-kg object is moved along a rough surface inclined at 15 downward at a constant speed as the result of the applied horizontal force. The coefficient of kinetic friction...
- Q Suction cup hooks are placed against a smooth surface such as glass. The hooks remain in place and can hold up light objects. a) What force holds the hooks up?...
- Q When two objects slide against one another, which of the following statements about the force of friction between them is true?The magnitude of the frictional force is always equal to...
- Q A child goes down a playground slide with an acceleration of 1.34 m/s. Find the coefficient of kinetic friction between the child and the slide if the slide is inclined...
- Q A 3 kg block is being pushed on a rough floor by a 2 N force acting to the right. It has an acceleration of 0.25 m/s2 to the left....
- Q Which of these is an example of sliding friction?A. a flying kite pushed by a gentle breezeB. a badminton shuttlecock flying over the netC. a basketball rolling across a wooden...
- Q A marble, a hoop bracelet, a tube of lip balm, and a rectangular jewelry box are released from the top of a steeply inclined piece of wood. Which object would...
- Q Place the notebook on a table, and push it a few inches with your finger. When it moves, it has kinetic energy. Which kind of force opposed the motion of...
- Q 8. Two packages are connected by a very light string that goes over an ideal pulley as shown in the figure. Package A has a mass of 3.0 kg and...
- Q 14. The figure shows two crates, each of mass m = 24 kg, that are connected by a very light wire. The coefficient of kinetic friction between the crate on...
- Q A 9.3 kg stone on a flat floor is pushed with a force of 18.9 N to the right. If the coefficient of static and kinetic friction between the stone...
- Q 41. (II) A 2.0-kg silverware drawer does not slide readily. The owner gradually pulls with more and more force, and when the applied force reaches 9.0 N, the drawer suddenly...
- Q Wings on race cars push them into the track. The increased normal force makes large friction forces possible. At one Formula One racetrack, cars turn around a half-circle with diameter...
- Q A 6.0-kg box slides down an inclined plane that makes an angle of 39 with the horizontal. If the coefficient ofkinetic friction is 0.40, at what rate does the box...
- Q You push horizontally on a 120-N box that is initially resting on a horizontal table. The coefficient of static friction between the box and the table is 0.75, and the...
- Q A 50-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 30.0 below the horizontal is applied to the box. The coefficient...
- Q A 200-g hockey puck is launched up a ramp that is inclined at a 30 angle above the horizontal. The coefficients of static and kinetic friction between the puck and...
- Q Match the following formulas about calculating friction:Always works. FN can be found by summing all the y-dir forces, recognizing that the acceleration in the y-dir is (probably) zero, and solve...
- Q A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it travels 11 m. What is the coefficient of kinetic friction between...
- Q A coin is placed 13.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on...
- Q Consider the system shown in the figure. Block A (5 kg) and block B (2 kg). Once block B is set into downward motion, it descends at a constant speed....
- Q A 226 Hz tone is played in a chamber filled with room temperature helium at atmosphericpressure. The speed of sound in helium under these conditions is 979 m/s. What will...
- Q (a) If the crate doesn't move, what's the magnitude of the static friction force (in N)?N(b) What is the minimum possible value of the coefficient of static friction between the...
- Q A 1,587-kg car starts from rest atthe top of a driveway 6.58 m longthat is sloped at an angle of 26degrees with the horizontal. If anaverage friction force of 2,003...
- Q Three cars (car F, car G, and car H) are moving with the same velocity when the driver suddenly slams on the brakes, locking the wheels. The most massive car...
- Q Study the diagram. A fridge has height h, width w, and mass m, which we assume is distributed uniformly throughout the volume of the fridge. A person pushes on the...
- Q Initially at rest, a box moves down an incline which is 25 degrees up from the horizontal. While the box is moving down the incline, the friction between the box...
- Q At an accident scene on a level road, investigators measure a car's skid mark to be 109 m long. It was a rainy day and the coefficient of friction was...
- Q IP A 37-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 24 , the crate begins to slide downward.What...
- Q It would be expected that as the angle of an incline increases, the coefficient of static friction must also increase in order to maintain rolling without slipping. Is this supported...
- Q When the displacement is half of the amplitude then ratio of potential energy to the tota energy is 1 1 2 3 feff 2 1 4 3 1 4 1...
- Q Q 8 A block of mass m is taken from A to B slowly under the action of a constant force F Work done by this force is 1 FR...
- Q 4 A simple pendulum consists of string of length L and suspended mass m It is released from horizontal position as shown in the figure Speed of the mass when...
- Q cable exerts a constant upward tension of magnitude 1 58 x 10 N on a 1 40 x 10 kg elevator as it rises through a vertical distance of 1...
- Q A student produces a power of P 0 71 kW while pushing a block of mass m 63 kg on an inclined surface making an angle of 0 6 5...
- Q Q 5 The system shown in figure is released from rest with spring at natural length The spring starts extending as soon as it is released Neglect friction and masses...
- Q 29 A shell of mass 200g is ejected from a gun of mass 4kg by an explosion that generates 1 05 kJ of energy The initial velocity of the shell...
- Q questions also refers to the same famous Cyclone roller coaster ride at Coney Island shown in the sketchbelow Assume no friction A A 50 m 25 r P R How...
- Q Physics Part A ii Maximum Marks 21 This section has 7 questions Each question has FOUR options A B C and D Only ONE of these four option s is...
- Q In the figure shown C is a fixed wedge on horizontal surface Blocks A and B are of masses m and 2m respectively are kept as shown in figure They...
- Q 27 A particle accelerating uniformly has velocity v at time t Calculate the work done on the particle in time t t t 1 mv 2 1 2 t 2...
- Q A small particle of mass m is released from rest in the position shown and swings freely in vertical plane first about and then about a peg A Vertically below...
- Q One end of a 10 cm long silk thread is fixed to a large vertical surface of a charged nonconducting plate and the other end is fastened to a small...
- Q 1 Two charges q and q2 are placed 30 cm apart as shown in the figure A third charge q3 is moved along the arc of a circle of radius...
- Q Water falls from a height of 60 m at the rate of 15 kg s operate a turbine The losses due to frictional forces a 10 of energy How much...
- Q Q 95 Consider a drop of rain water having mass 1 g falling from a height of 1 km It hits the ground with a speed of 50 m s...
- Q Two ideal helical springs have spring constants K 20 N m and K 40 N m respectively If they have been pulled by same force and potential energy stored in...
- Q A neutron makes a head on elastic collision with a stationary deuteron The fractional energy loss of the neutron in the collision is 1 16 81 8 9 8 27...
- Q A 75 0 kg box is pulled from rest along a friction less horizontal floor by a rope that is angled upward at 24 00 above the horizontal The tension...
- Q A bomb of mass 5m initially at rest explodes and break into three pieces of masses in the ratio 1 1 3 The two pieces of equal mass fly off...
- Q A bomb of mass 9kg initially at rest explodes into two piece of masses 3 kg and 6 kg The kinetic energy of the 3 kg mass is 216 J...
- Q The graphs below shows the magnitude of the force on a particle as the particle moves along the positive x axis from the origin to x x The force is...
- Q Work done by external agent on a test charge q in moving it in an electrostatic field 3 D depends on initial and final speeds depends on its initial and...
- Q And answer the questions i to iv based on the above diagram 4 i S I unit of work done for the given system is 1 Newton 2 Joule Sec...
- Q no a A coil having a resistance of 702 and an inductance of 31 8mH is connected to 230V 50Hz supply Calculate i the circuit current ii Phase angle iii...
- Q 1 In the figure shown below all pulleys and ropes are massless and frictionless Initially the 5kg and 3kg blocks are at rest When released it is noticed that the...
- Q 3 A massless spring of force constant k 25 N m is tied to a massless string that passes over a smooth pulley and is connected to the roof as...
- Q A DC shunt motor being fed from a 200v supply runs at 750 rpm with field current 2A Neglecting armature copper loss and all parameter kept constant Find the speed...
- Q A small particle slides along a track with elevated ends and a flat central part as shown in figure The flat part has a length 3m The curved portions of...
- Q Ves the masses slowly along the paths PQR and along ABC The rough surfaces shown are AB and PQR and coefficient of friction for these paths is Select the correct...
- Q The block has mass M and rests on a surface for which the coefficient of friction If a force F kt is applied to the cable see figure the power...
- Q see 2011 x axis It is at rest at t 0 If the force on the particle varies with time then its kinetic energy at 4 5 s is F...
- Q ERA A particle of mass 0 5 kg is subjected to a force which varies with distance as shown in graph F N 16 21 Sec 10 myjt 2 16...
- Q Current through a resistance Rvaries with time ras Kn 41 Osrst If total charge flown through resistance in time interval t 0 to t to is Qo then heat n...
- Q A paricle of mass 2kg is free to move al ong x axis under the influence of a con servative force Ux x4 5x If total mec hanical energy is...
- Q In the figure shown if extension of spring is xo at time t the displacement of first block is initially the blocks are at rest and spring is relaxed block...
- Q For the series LCR circuit shown in the figure what is the resonance frequency and the amplitude of the current at the resonating frequency 220V 8mH mmmmm ww 4492 20...
- Q The 6 0 kg object below is released from rest at a height of h 5 0 m on a curved frictionless ramp At the bottom of the ramp the...
- Q Question 11 A body of mass 10 kg is initially at a height of 20 m above the ground It falls to a heightof 5 m above the ground Its...
- Q The work done on a body when taken from point A to B along three different paths is as shown figure Same conservative force is applied along the three path...
- Q If the dimensions of a physical quantity are given by MALT then the physical quantity will be a velocity if a 1 b 0 c 1 b acceleration if a...
- Q 1 A trolley of mass 1 kg is connected to two identical spring of spring constant 100 N m each If trolley is displaced from mean position by 1 cm...
- Q Consider the following sketch of potential energy for a particle as a function of position There are no dissipative forces or internal sources of energy The maximum total mechanical energy...
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