# physics

posted by .

A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?

• physics -

Work = Potential Energy increase = M g H

• physics -

d = 15 m
w = 5.3 kg
g = 10 m/s²
W = ?
F = mg
F = 5.3 kg x 10 m/s²
F = 53 N
W = F x d
W = 53 N x 15 m
W = 795 Joules

## Similar Questions

1. ### physics

A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 21 m/s at an angle of 58° above the horizontal. At the instant when the kit is caught, it is traveling …
2. ### physics

A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 23 m/s at an angle of 69° above the horizontal. At the instant when the kit is caught, it is traveling …
3. ### physics

With the forces in equilibrium if a stationary climber is using a rope which is 60 degrees to the vertical, the rock face is at 30 degrees to the vertical, and the weight of the climber in cluding equipment is 850N. What is the tension …
4. ### physics

A 85 kg rock climber first climbs 50 m up to the top of a quarry, then descends 75 m from the top to the bottom of the quarry. If the initial height is the reference level, find the potential energy of the system (the climber plus …
5. ### physics

Stemming a chimney. A rock climber of mass 71 kg wants to make her way up the crack between two rocks as shown in the figure below. The coefficient of friction between her shoes and the rock surface is ìS = 0.90. What is smallest …
6. ### physics

A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
7. ### physics

a rock climber weights 550N and is carrying a backpack that weighs 50N. how much total work has been done after she climbs 12m
8. ### Physics

A rock climber of mass 55 kg is hanging suspended from a rope tied to another climber of mass 65 kg on a horizontal cliff ledge. If the coefficient of kinetic friction between the climber on the ledge and the ledge is 0.45, what is …
9. ### Algebra

A rock climber looks at the top of a vertical rock wall at an angle of elevation of 74 degrees. He is standing 4.2m from the base of the wall and his eyes are 1.5m from the ground. How high is the wall, to the nearest tenth of a meter?
10. ### Physics 12

A 62 kg rock climber is attached to the rope that is allowing him to hang horizontally with his feet against the wall. The tension in the rope is 7.1x10^2 N,and the rope makes an angle of 32 degrees with the horizontal.Dtermine the …

More Similar Questions