taylorswift
New member
- Joined
- May 9, 2021
- Messages
- 8
I have done this question, for a I got 30 and b I got 0 amd 2/3 but for part c I have found 2 answers, 1/13 or 0.754..., which (if any) is the correct answer? TIA
A package P of weight 20 N is moving up an inclined plane under the action of a horizontal force of magnitude 30 N, as shown in Figure 3. The force is acting in a vertical plane through a line of greatest slope of the plane. The coefficient of friction between P and the plane is μ.
The plane is inclined at angle α to the horizontal, where tan α = 5 / 12
Package P is modelled as a particle.
(a) Find the magnitude of the normal reaction of the plane on P.
(2) (4)
(5) (Total for Question 4 is 11 marks)
(b) Find the range of possible values of μ.
The horizontal force is now removed and P continues to slide up the plane until P comes to
instantaneous rest. Package P then slides back down the plane. Given that μ = 1/3 ,
(c) find the acceleration of P as it slides down the plane.
A package P of weight 20 N is moving up an inclined plane under the action of a horizontal force of magnitude 30 N, as shown in Figure 3. The force is acting in a vertical plane through a line of greatest slope of the plane. The coefficient of friction between P and the plane is μ.
The plane is inclined at angle α to the horizontal, where tan α = 5 / 12
Package P is modelled as a particle.
(a) Find the magnitude of the normal reaction of the plane on P.
(2) (4)
(5) (Total for Question 4 is 11 marks)
(b) Find the range of possible values of μ.
The horizontal force is now removed and P continues to slide up the plane until P comes to
instantaneous rest. Package P then slides back down the plane. Given that μ = 1/3 ,
(c) find the acceleration of P as it slides down the plane.
