Question

A 20 kg truck drives in a circle of radius 4 m at 10m/s. What causes

the circular motion?
A. Normal Force
B. Friction
C. Tension
D. Gravity

Answer 1

Normal force

Step-by-step explanation:

• The force is centipetral force

Calculating :-

• Mass=m=20kg
• Radius=r=4m
• Velocity=10m/s=v

We know

`\boxed{\sf F_c=(mv^2)/(r)}`

`\\ \sf\longmapsto F_c=(20(10)^2)/(4)`

`\\ \sf\longmapsto F_c=(20(100))/(4)`

`\\ \sf\longmapsto F_c=(2000)/(4)`

`\\ \sf\longmapsto F_c=500N`