Climbing a vertical rope is difficult. You have to lift your full body weight with your...

 

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Climbing a vertical rope is difficult. You have to lift your full body weight with your arms. if your mass is 60 kg and you climb 2.0 m, by how much do you increase your gravitational potential energy? 1) A block of bricks is raised vertically to a bricklayer at the top of a wall using a pulley system. If the block of bricks has a mass of 24 kg, what is its weight? It is raised 3.0 m. Calculate its increase in gravitational potential energy when it reaches the top of the 2) wall. 3) Travelling in a mountainous area, a bus of mass 3 tonnes reaches the edge of a steep valley. There is a 1 km vertical drop to reach the valley below, but 20 km of road to get there. What will be the change in the energy stored gravitationally when the bus is at the valley bottom? Assuming the bus in question 3 does not change its cruising speed on the way down, where does the energy stored gravitationally go? Why is there a risk of brake failure in this situation? 4) Assume g = 9.8 N kg near the surface of the Earth. %3D Climbing a vertical rope is difficult. You have to lift your full body weight with your arms. if your mass is 60 kg and you climb 2.0 m, by how much do you increase your gravitational potential energy? 1) A block of bricks is raised vertically to a bricklayer at the top of a wall using a pulley system. If the block of bricks has a mass of 24 kg, what is its weight? It is raised 3.0 m. Calculate its increase in gravitational potential energy when it reaches the top of the 2) wall. 3) Travelling in a mountainous area, a bus of mass 3 tonnes reaches the edge of a steep valley. There is a 1 km vertical drop to reach the valley below, but 20 km of road to get there. What will be the change in the energy stored gravitationally when the bus is at the valley bottom? Assuming the bus in question 3 does not change its cruising speed on the way down, where does the energy stored gravitationally go? Why is there a risk of brake failure in this situation? 4) Assume g = 9.8 N kg near the surface of the Earth. %3D