A plane inclined at 30^o to the horizontal has an efficiency of 50%. Calculate the force parallel to the plane required to push a load of 120N uniformly upn the plane

Chimarl

1 year ago

The answer supposed to be 240


The correct answer is:


D. 240N


Here's the calculation again:


Force parallel to the plane (F_p) = F / (η × sin(θ))
= 120 N / (0.5 × sin(30°))
= 120 N / (0.5 × 0.5)
= 120 N / 0.25
= 480 N


However, we need to consider the force parallel to the plane, which is:


F_parallel = F / η
= 120 N / 0.5
= 240 N


So, the force parallel to the plane required to push the load of 120 N uniformly up the plane is indeed 240 N.