pling learning Below is a series of motion scenarios, accompanied by short descr
ID: 1357580 • Letter: P
Question
pling learning Below is a series of motion scenarios, accompanied by short descriptions and an arrow indicating the instantaneous velocity. Assume that air resistance is negligible in every scenario. The only forces present in each scenario are gravity, surface (or normal) forces, and friction if indicated. In each case, use one of the provided arrows (or "zero") to indicate the direction of the net force acting on the block. A block slides down a A block in mid-air, shortly frictionless plane after being thrown. A block in mid-air, exactly A block slides up a at the peak of its trajectory. frictionless plane. A block slides down an incline slowing down due A block sliding along a flat, to friction. frictionless plane. A Navt PravinExplanation / Answer
A block sliding along a flat frictionless plane is then total force will be along the horizontal direction(---->)
F=ma
A block slides down an incline slowing down due to friction is then Net force is Fnet =mgsintheta-umgcostheta, that will be along the sliding block direction.
A block slides up a frcitionless plane then net force will be along the upwards F =mgsintheta
A block slides down a frcitionless plane is along the block in downward direction F =mgsintheta
A block which is at the peak of the trajectory final velocity becomes zero Fnet =Sqrt(mv2/R+mgcosalpha) =mg
so,acts in the downward direction
A block mid air after immediately thrown then net force will be along the path of the trajectory
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