Answer: Maximum Linear Velocity = 0.24 kg
Explanation:
a. The maximum frictional force between the tyres and the road is equal to 20% of the weight of the car and driver. Calculate the coefficient of friction when an adult of mass 70kg is driving the kart.
b. Calculate maximum angular velocity at which the car can travel round the curve at a constant radius of 42 m.
c. Calculate the maximum linear velocity.
d. You decide that this is not nearly fast enough and decide to create a banked track of 12O, what is the maximum linear velocity now?
e. It is important that the karts can brake effectively. They use drum brakes where a solid circular drum of mass 4.0 kg and radius 0.15 m is rotating at an angular speed of 22 rad s−1 about an axis when a ‘braking’ torque is applied to it which brings it to rest in 5.8 s.
calculate:
i. it's angular deceleration when yhe break torque is applied
ii. the moment of inertia of the drum about the axis shown
I = 1/2 mr^2
iii. the resultant torque that causes it to decelerate.
can anyone please help on this? I think I've got an answer to a. as 0.02
I'm really struggling with b. onwards, can anyone explain b. especially, with steps please so I can understand?
a previous question stated that b. = 0.24Rads/s, can you also explain how b. is 0.24Rads/s im baffled how it