NON UNIFORM CIRCULAR MOTION

• g upwards
• 0.5g upwards
• zero
• g downwards

• Rg
• g/R
• Zero
• √Rg

A body is moving along a circular path with variable speed. It has

• a radial acceleration
• a tangential acceleration
• zero acceleration
•  tangential and radial accelerations

A fighter aeroplane flying in the sky dives with a speed of 360 km/hr in a vertical circle of radius 200 m. Weight of the pilot sitting in it is 75 kg. What will be the value of force with which the pilot presses his seat when the aeroplane is at highest position (g = 10 m/s2)

• 3000 N
• 1500 N
• (75 × g)N
• 300 N

A motor cyclist loops a vertical circular loop of diameter 18 m, without dropping down, even at the highest point of the loop. What should be his minimum speed at the lowest point of the loop?

• 10 m/s
• 16 m/s
• 21 m/s
• 30 m/s

• 4000 m
• 2000 m
• 200 m
• 1000 m

A person is standing on a scale in an elevator accelerating downward. Compare the reading on the scale to the person's true weight.

• less than their true weight
• equal to their true weight
• greater than their true weight
• zero

Tags

NGSS.HS-PS2-1

Consider the case of the non-uniform circular motion when you are riding in a Ferris Wheel. What is the correct expression that relates all the forces when you are at the top of the circle?

• F_{c =}  W + N
• F_{c =}  W - N
• F_{c =}  W 
• F_{c =}  N - W

Tags

NGSS.HS-PS2-1

Which one is the right relationship when you are at the bottom of a Ferris Wheel ride?

• W = F_c - N
• N = W + F_c
• F_c = W - N
• W = N - F_c

Tags

NGSS.HS-PS2-1

Which of the following force is zero whereby you do not feel any force coming from the seat?

• Normal reaction force
• Weight
• Centripetal Force
• Gravitational Force

Tags

NGSS.HS-PS2-1