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2 identical trolleys of mass M(one is loaded with 2 blocks of mass m) are on a ramp inclined at 35° and are connected by a wire that passes around a pulley at the top of the ramp. They are released and accelerate accordingly. Show that a=(mgsin35°)/(M+m).

Construction of Free Body Diagrams of the Trolleys and resolving the forces (Weight and Tension) components acting parallel to the ramp (assuming friction and air resistance are negligible) show that for Tro...
NV
Answered by Neophytos V. • Physics tutor
4043 Views

Given that z = 6 is a root of the cubic equation z^3 − 10z^2 + 37z + p = 0, find the value of p and the other roots.

Okay, first, we will tackle this by using the information given to us (z=6) to solve for p. By substituting 6 wherever there is a z, we will end up with 216 - 360 + 222 + p = 0.Solving this through rearrange...
AW
Answered by Andrew W. • Physics tutor
3885 Views

A ball is released from height h w.r.t. the ground. Draw a qualitative height versus time diagram of the ball bouncing in a non-ideal case.

In a non-ideal case, there will be energy loss in heat when the ball touches the ground. In particular: K n =aK n-1 , where K n-1 is the kinetic energy before the nth bounce, K n is the kinetic energy after ...
EP
Answered by Emanuele P. • Physics tutor
3076 Views

A car of mass M and a maximum power output of P is on an rough inclined plane Θ to the horizontal. What is the maximum velocity (v). Coefficient of friction=μ and air resistance=kv where k is constant

At the maximum velocity the driving force of the car is equal to the sum of the opposing forces: F driving =F friction +F air +mg sinΘ F friction =mgμ cosΘ F air =kv p=[mgμ cosΘ+ kv+mg sinΘ]v = [μ cosΘ+sinΘ]...
JB
Answered by Joel B. • Physics tutor
2524 Views

In the Photoelectric Effect, what is mean by 'threshold frequency' and how does the magnitude a photons frequency effect the electron it is absorbed by?

The threshold frequency is the minimum frequency a photon can be and still just overcome the work function (Φ) of a particular material. The threshold frequency is directly proportional to the work function ...
JH
Answered by Josh H. • Physics tutor
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