Question No : 15
The centre of gravity of a trapezium with parallel sides a and b lies at a distance of y from the base b, as shown in the below figure. The value of y is
Question No : 16
The maximum velocity of a particle moving with simple harmonic motion is
Question No : 17
Work done is said to be zero, when
Question No : 18
A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is
Question No : 19
The maximum acceleration of a particle moving with simple harmonic motion is
Question No : 20
If a number of forces act simultaneously on a particle, it is possible
Question No : 21
Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.)