Which of the following is a scalar quantity ?
Which of the following is a scalar quantity ?
A. energy
B. momentum
C. torque
D. impulse
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If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________?
If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________? A. —rad/sec 10
B. —rad/sec 20
C. —rad/sec 30(Correct)
D. none of the aboveA shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan”1 x, where x is______________________?
A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan”1 x, where x is______________________? A. 3/4
B. 4/5
C. 5/3
D. 3/5(Correct)Minimum potential energy of a system will be in the position of________________?
Minimum potential energy of a system will be in the position of________________? A. stable equilibrium(Correct)
B. unstable equilibrium
C. neutral equilibrium
D. all of the aboveThe force polygon representing a set of forces in equilibrium is a_____________________?
The force polygon representing a set of forces in equilibrium is a_____________________? A. triangle
B. open polygon
C. closed polygon(Correct)
D. parallelogram