Physics Chapter 4 Quiz

Like parallel forces are the forces that are parallel to each other and have the .........….direction.

• same

• opposite

• None

Two equal and opposite forces having same line of action will result in

• torque

• equilibrium

• couple

The number of forces that can be added by head to tail rule are

• 2

• 7

• any number

Vertical component of force is 10 N, Horizontal component is 5 N. The direction of force F with x-axis is given by.......... degrees

• 15

• 63

• 150

SI unit of Couple is

• N-m

• N-s

• Kg

A small child can play with a fat child on the seesaw, if small child sits at .................... distance than that of fat child

• equal

• smaller

• greater

The center of gravity of a uniform triangular sheet is

• point of intersection of its prependiculars

• point of intersection of its medians

• point of intersection of its Altitudes

The line around which body rotates is called

• Axis of rotation

• line of action

• Moment arm

Racing cars are made stable by

• lowering their center of gravity

• making their base wide

• Both

Second condition for equilibrium is

• $\Sigma\ F_{ }\ =\ 0$

• $\Sigma\ \tau\ =\ 0$

• $\Sigma\ F_x\ =\ 0$