Energy and Momentum Problem HELP

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To solve the energy and momentum problem, first calculate the force exerted by Brutus while lifting the 260 kg weights, which is equal to the weight of the mass (force = mass x gravity). The work done while holding the weights above his head is calculated using the formula W = Fd, where F is the force and d is the distance (2.50 m). When lowering the weights, the work done is also the same amount but in the opposite direction, resulting in the same Joules. Finally, to find the power developed, divide the total work done by the time taken (2.4 s) using the formula P = W/t. This approach provides a clear understanding of the work and power involved in Brutus's weightlifting.
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Energy and Momentum Problem...HELP!

Homework Statement



Brutus, a champion weightlifter, raises 260 kg of weights a distance of 2.50 m.
(b) How much work is done by Brutus holding the weights above his head in Joules?
(c) How much work is done by Brutus lowering them back to the ground in Joules?
(e) If Brutus completes the lift in 2.4 s, how much power is developed?


Homework Equations


W=FdCos
P=W/t


The Attempt at a Solution

 
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you know the mass. and the distance that the mass is lifted.
so calculate the force of the mass
then calculate the work done
 

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