Physics question and answers for April 23, 2024
- Q Problem 3 A wheel radius 12 cm rotates without friction about an axle through its center A constant force with magnitude 80 N is applied tangent to the rim of...
- Q The seesaw in the figure below is in equilibrium Assume that the seesaw is uniform and it has symmetric shape The pivot is placed right below its midpoint Which option...
- Q 55 II A merry go round has a mass of 1440 kg and a radius of 7 50 m How much net work is required to accelerate it from rest...
- Q A 42 g bug crawls from the center to the outside edge of a 170 g disk of radius 20 0cm The disk was rotating at 15 0 rad s...
- Q 4 Let the sun to be at the origin of a coordinate system The earth is orbiting around the sun The earth is also self rotating Let the distance of...
- Q In cycling the torque generated about the crank axis is determined by the magnitude of the force from a foot pushing the pedal as well as the angle between the...
- Q 37 II A softball player swings a bat accelerating it from rest to 2 6 rev s in a time of 0 20 s Approximate the bat as a 0...
- Q Foy Fe mg 3 0 m 21m Fw 1 40 m 2 8 m ME FM 15 12 cm 24 cm Problem 5 Consider a ladder with a painter climbing...
- Q A uniform horizontal rod of length L and mass M is in complete equilibrium and has a frictionless pivot at the left end and is held in place by a...
- Q Two thin sheets on the surfaces of a slope of angle of elevation of 0 30 form a pair of rails The distance between the sheets is d 1 6...
- Q A 14 6 N force is applied to a cord wrapped around a pulley of mass M 3 22 kg and radius R 28 9 cm The pulley accelerates uniformly...
- Q seesaw at an angle of 27 degrees at a distance of 7 5 m from the fulcrum e F input R How much force will their friend
- Q A rotating device consists of a uniform bar mass M length L with a pivot at the center O and a small point mass m attached a distance L 3...
- Q Two identical disks rotate about fixed axes with negligible mass Identical masses are attached to strings wrapped around the axis and the outside rim respectively of the two disks The...
- Q m 0 R m 1983M2 A uniform solid cylinder of mass m and radius R is mounted on frictionless bearings about a fixed axis through O The moment of inertia...
- Q Problem 2 A rod of mass M 0 2 kg and length 1m is initially at rest and it is pivoted about one of its ends A mass m 0...
- Q 164 OR m Bullet Rod Block Problem 7 The puck in the figure above on the left has a mass of 0 120 kg The distance of the puck from...
- Q Solid sphere of mass m and radius r R R 13 Before After Problem 3 A solid sphere of mass m and radius r rolls without slipping v rw along...
- Q Bullet Rod Block Problem The puck in the figure above on the left has a mass of 0 120 kg The distance of the pu from the center of rotation...
- Q A 6 0 kg particle moves to the right at 4 0 m s as shown The magnitude of its angular momentum about the point O is 4 m s...
- Q A disk rotates about an axis through its center Point A is located on its rim and point B is located exactly one fourth of the way from the center...
- Q If global warming continues it s likely that some ice from the polar ice caps of the Earth will melt and the water will be distributed closer to the Equator...
- Q 4 Points DETAILS SERCP11 7 3 OP 007 b What is the angular speed of the wheels in rad s when the linear speed of the bicyclist reaches 10 4...
- Q Pin L M Problem 1 A long uniform rod of length L and mass M is pivoted about a frictionless horizontal pin through one end The rod is nudged to...
- Q Wheel 2 has twice the radius of wheel 1 Each is accelerated from rest with a force applied as shown Assume that all the mass of the wheels is concentrated...
- Q 3 A disk released from the top of an in clined plane has a speed of 3 92 mls at the bottom Has high is the upper end the inclined...
- Q X the a Find the centroid 2 pts b Find the moment of inertia about the horizontal X X centroidal axis 5 pt c Find the moment of inertia about...
- Q 1973M3 A ball of mass m is attached by two strings to a vertical rod as shown above The entire system rotates at constant angular velocity to about the axis...
- Q 0 5 m r 1 5 m Axle Y m 20 kg m C1991M2 Two masses m and m are connected by light cables to the perimeters of two cylinders...
- Q 200 2 2 Problem 1 A sphere of radius r 0 12 m and mass m 8 kg starts at rest from the top of an inclined plane with angle...
- Q A single force acts on a particle P Rank each of the orientations of the force shown below according to the magnitude of the time rate of change of the...
- Q Q2 A 3kg thin spherical shell with a 0 1m radius is wounded by a string The shell begins at rest before the string is pulled and causes it to...
- Q A sphere a hoop and a cylinder all with the same mass M and same radius R are rolling along all with the same speed v Isphere MR Idisk MR...
- Q Q1 A set of masses rests on an x y plane measured in meters The masses are m 1kg at 2 1 m 1kg at 2 1 m3 2kg at...
- Q 4 Modern hard drives spin very fas called the platter Assume an aluminum platter that is 3 5 in in diameter 1 mm thick and spinning at 5400 rpm Treat...
- Q A child stands on the edge of a merry go round which spins without friction The child slowly walks towards the center of the platform As the child moves toward...
- Q In the figure point P is at rest when it is on the x axis The time t when P returns to the original position on the x axis is...
- Q A janitor opens a 1 35 m wide door by pushing on it with a force of 31 5 N directed perpendicular to its surface HINT a What magnitude torque...
- Q A janitor opens a 1 10 m wide door by pushing on it with a force of 36 5 N directed perpendicular to its surface HINT a What magnitude torque...
- Q A 156 kg object is moving in a circular path r 10 cm at a constant rate of 8 25 rev s Find the tangential velocity Round your answer to...
- Q A vinyl can turn 8 54 times within 2 85 s If it starts from rest what is its angular acceleration Round your answer to 2 decimal places
- Q A skater is spinning with an angular velocity of 15 rad s She then comes to a stop over a brief period of time During this time her angular displacement...
- Q A fan takes 2 00 s to reach its operating angular speed of 10 0 rev s What is the average angular acceleration rad s 2 Round your answer to...
- Q A car s wheel whose radius is 43 69 cm starts from rest and accelerates uniformly to a velocity of 15 25 m s within 8 77 s Find the...
- Q A rod of mass M 9 kg and l 1 m is initially at rest and it is pivoted about one of its ends A mass m 0 004 kg...
- Q The 2 0 m long 15 kg beam in figure is hinged at its left end It is falling rotating clockwise under the influence of gravity and the figure shows...
- Q A solid cylinder of radius r 1 m and mass m 1 kg starts at rest from the top of an inclined plane with angle and height h 5 m...
- Q P 71 0 2 m 0 4 m P 0 25 m 0 35 m 29 18 P3 F2 250 N F3 392 N Problem 4 a Four forces are...
- Q Problem 2 In the figure below a rope with tension T is connected to a mass m 0 5 kg The rope then goes over a cylindrical pulley with radius...
- Q fk T2 m a a m T2 m a Problem 5 In the figure above on the left a rope with tension T is connected to a mass m 1kg...
- Q B B A B AB sin 0 7 7x F T rF sin 0 Tnet Ia a ra Problem 1 Three forces are applying torques on a bar as shown...
- Q Two people of different masses are holding identical bowling balls and are balanced on a seesaw Assuming the larger person does not move then in order to balance after they...
- Q Consider the following three objects each of the same mass and radius 1 a solid sphere 2 a solid disk 1 0 4MR2 1 0 5MR 3 a hoop 1...
- Q A 2 0 kg hoop 1 MR2 rolls without slipping on a horizontal surface so that its center proceeds to the right with a constant linear speed of v 7...
- Q A uniform solid disk 1 0 5MR2 of radius 1 60 m and mass 2 30 kg rolls without slipping starting from rest to the bottom of an inclined plane...
- Q A 60 0 kg skater begins a spin with an angular speed of 6 0 rad s By changing the position of her arms the skater decreases her moment of...
- Q A force of F 68 0 N is applied tangentially to a wheel of radius R 0 600 m and gives rise to an angular acceleration of 1 90 rad...
- Q A boy and a girl are riding on a merry go round that is turning The boy is twice as far as the girl from the merry go round s...
- Q Two points are located on a rigid wheel that is rotating with decreasing angular velocity about a fixed axis Point A is located on the rim of the wheel and...
- Q A wheel starts from rest and has an angular acceleration of 4 70 rad s2 When it has made 3 00 rev its angular velocity in rad s is Your...
- Q O 5 0 rad 10 rad 7 5 rad F A solid cylinder of mass 10 kg is pivoted about a frictionless axis thought the center O A rope wrapped...
- Q nrw8c11p51 Two skaters each of mass 80 kg approach each other along parallel paths separated by 7 7 m They have equal and opposite velocities of 2 1 m s...
- Q An object s angular acceleration is 36 rad s If it were initiall spinning with a velocity of 6 0 m s what would its angular velocity after 5 0...
- Q hrw8c11p21 What is the net torque about the origin on a flea located at coordinates 0 m 6 m 3 m when forces F1 3 k and F2 2 M...
- Q 60 hrw8c11p55 A uniform thin rod of length 0 65 m and mass 3 5 kg can rotate in a horizontal plane about a vertical axis through its center The...
- Q A square metal plate 0 18 m on each side is pivoted about in axis through point 0 at its center and perpendicular to he plate Calculate the net orque...
- Q Course Contents HW11 Calculate the torque exerted by the friction on the wheel Timer hrw8c11p82 A wheel of radius 0 290 m which is moving initially at 41 m s...
- Q Course Contents HW11 A constant horizonta e hrw8c11p7 A constant horizontal force of 11 0 N is applied to a wheel of mass 10 0 kg and radius 0 40...
- Q The unstable truss system has three pin connected steel members If member AB has an angular velocity of w 30 rad s determine the angular velocities of the other members...
- Q Rasheed and Sofia are riding a merry go round that is spinning steadily Sofia is twice as far from the axis as is Rasheed Sofia s angular velocity is that...
- Q When a fan is turned off its angular speed decreases from 10 rad s to 6 3 rad s in 3 3 s What is the magnitude of the average...
- Q A fan is rotating with an angular velocity of 11 rad s You turn off the power and it slows to a stop while rotating through angle of 6 6...
- Q 29 A 24 5 kg child is standing on the outer edge of a horizontal merry go round that has a moment of inertia of 989 kg m about a...
- Q 26 A uniform solid 100 kg cylinder with a diameter of 1 0 m is mounted so it is free to rotate about fixed horizontal frictionless axis that passes through...
- Q In outer space two identical space modules are joined together by a massless cable These modules are rotating about their center of mass which is at the center of the...
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