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Study Guide 1 1. A child sitting 1.70 m from the center of a merry-go-round moves with...

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Physics

Study Guide 1

1. A child sitting 1.70 m from the center of a merry-go-roundmoves with a speed of 1.85 m/s, Calculate the centripetalacceleration of the child and the net horizontal force exerted onthe child. (mass m = 22.5 kg )

2. A horizontal force of 320 NN is exerted on a 2.0-kg ball asit rotates (at arm's length) uniformly in a horizontal circle ofradius 0.90 m, Calculate the speed of the ball.

3. Two objects attract each other gravitationally with a forceof 2.3×10−10 N when they are 0.65 mm apart. Their totalmass is 4.6 kg, Find their individual masses.

4. Calculate the speed of a satellite moving in a stablecircular orbit about the Earth at a height of 4840 km

5. A satellite of mass 5430 kg orbits the Earth and has a periodof 6570 s . Determine the radius of its circular orbit, themagnitude of the Earth's gravitational force on the satellite, andthe altitude of the satellite.

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