but since it is a varying force, how would i use the scalar product, it isnt a constant force. should i only apply it to the final position where. what is the formula for Wa? since its the negative of Wg= mghcos180=-(9.8)(170)(0.86)=-1429 J. Wa should be +1429J but how can i calculate it...
so for a, are the calculations correct? tension will have its corresponding components, yes.
and for c work due to tension is always 0 then (cos90)
"why isn't the component of Force along x = M*g*Sinθ" how did you come to that conclusion???
EDIT: how would one calculate the Wa without setting...
for (a) gravity does not have any components. i think you misread the question. ive attached a diagram.
for (b) since the change in kinetic energy is zero, mgh is equal to the negative of work
for (c) i dont quite understand
A 170 kg crate hangs from end of rope length L = 15 m. You push horizontally on crate with varying force F to move distance d = 5 m sideways. (a) What magnitude be of F when crate is in final position? During crate's displacement, what are (b) the total work done on it, and (c)...
300 kg speedboat is pulling two 25 kg skiers using ropes. Each rope makes an angle of 30 with the boat axis. Each rope exerts 500N force and acc. is 2m/s^2. What force must the boat exert on water to keep skiers moving?
The Attempt at a...
[SOLVED] Newtons Second Law
On a force/mass vs acceleration graph where force/mass is horizontal, what does the slope represent?
The Attempt at a Solution
My calclations: ex. (2m/s^2 - 1m/s^2)/(3 N/kg - 1N/kg)
[SOLVED] The Flea
A flea, jumping with its highest possible initial speed, can jump to a maximum vertical height of 1 cm. What is
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