Angular Momentum
Trending Questions
The angular velocity of the revolution of a planet around the sun increases. Why?
Is impulse change in momentum?
How is impulse related to velocity?
Find the average velocity of a projectile between the instants it first crosses half the maximum height and then again does the same. It is projected with a speed u at an angle θ with the horizontal. (no need to calculate, just work it out mentally!).
data insufficient
Onlypurely rotating bodies can have angular momentum
A.TRUE
B. FALSE
True
False
A particle of mass m is moving with constant velocity v parallel to x-axis in x-y plane as shown in figure. Calculate its angular momentum with respect to origin at anyinstant 't'.
mvb
2mvb
mrv
mvb
- Increases
- Decreases
- Remains constant
- First increases and then decreases
A uniform slender bar AB of mass m and length L supported by a frictionless pivot at A is released from rest at its vertical position as shown in figure. Calculate the magnitude of the reaction at pivot when the bar just acquires the horizontal position shown dotted.
√374mg
54mg
√634mg
None of these
- mvb
- mva
- mv√a2+b2
- mv(a+b)
- 250
- 125√3
- zero
- 125√34
(a) 2u cos θ
(b) u/cos θ
(c) 2u/cos θ
(d) u cos θ
Figure