A62 kg rock climber falls off the wall at the gym. immediately before she hits the padded floor, her velocity is 7.9 m/s, 15° away from the vertical. she comes to a stop 0.75 s later. what vertical force did the padded floor exert on the rock climber? if the floor was not padded and she instead came to a stop in 0.25 seconds, what vertical force would the floor have exerted on her?

Explanation:

Given

mass of climber= 62 kg

velocity of climber before it hits=7.9 m/s at an angle of from vertical

therefore change in momentum in vertical direction is

there is no change in horizontal momentum

and impulse=change in momentum

F.dt=946.22

For non padded floor

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.