An electric motor turns at 400 rpm . Its angular velocity in rad/ s will be:
- 20 π / 3
- 30 π / 4
- 40 π / 3
- 30 π / 3
In case of centripetal force the value of instantaneous acceleration is given by:
- ac= vr
- ac= v^2 / r
- ac= v / r
- ac= v^2 r
The relationship between radian and degree is:
- 1° = 57.3 rad
- 1° = π rad
- 1 rad =1°
- 1 rad = 57.3°
The area under force – displacement graph gives:
- Acceleration
- Work
- Power
- Displacement
Power is a dot product of:
- Force and velocity
- Force and Time
- Work and Time
- Force and displacement
An object has 1 J of P.E . What is the work done in terms of height:
- 0.1 J
- 0 J
- 10 J
- 1 J
At what point of the projectile motion vertical component of velocity is zero :
- Just before landing
- Highest point
- Point of projection
- Point of landing
The product of force and time is equal to:
- Change in momentum
- Force
- Velocity
- Angular momentum
Range of projectile on horizontal plane is same for the following pair of angle :
- 15 & 30
- 60 & 20
- 50 & 25
- 75 & 15
The slope of displacement – time graph is equal to :
- Distance
- Velocity
- Acceleration
- Displacement
