GRAVITATION

GRAVITATION

Multiple Choice

Name the force which exists between two objects.

• Centripetal force

• Gravitational force

• Muscular force

• Fricitonal force

Multiple Choice

Identify the force which make you move in circular path

• Gravitational force

• Frictional force

• centripetal force

• centrifugal force

Multiple Choice

What is 'G'?

• Gravity

• gravitational pull

• gravitational constant

• gravity constant

Multiple Choice

The value of 'g' is maximum at_______of earth

• equator

• poles

• core

• center

Multiple Choice

Mass is always _____ and can never be_______

• zero, constant

• changes, maximum

• constant, zero

• zero,changes

Multiple Select

S.I unit of acceleration due to gravity is

• $ms^{-2}$

• m/s

• m

• $ms^2$

Multiple Choice

select the correct formula for weight

• F = M a

• F = m g

• W = m a

• W = m g

Multiple Choice

correct equation for freely falling body

• v = u + at

• v = u + gt

• u = v + at

• u = v + gt

Multiple Choice

correct equation of motion for freely falling body

• $s\ =\ ut\ +\frac{1\ at2}{2\ }$

• s = ut + 1/2 at

• $s\ =\ ut\ +\ \frac{1\ gt^2}{2\ }$

• s = ut + gt

Multiple Choice

If a body is thrown upwards which quantity becomes zero

• s- distance

• u = initial velocity

• v = final velocity

• a = acceleration

Multiple Choice

If a body is thrown downwards which quantity becomes zero

• s- distance

• u = initial velocity

• v = final velocity

• a = acceleration

Multiple Choice

The value of g should be negative if an object is thrown

• downwards

• upwards

• at rest

• horizontally

Multiple Choice

S.I Unit of gravitational constant is

• $Nm^2kg^{-2}$

  
  

• $Nm^{-2}kg^2$

• $Nmkg$

• $N^2mkg^2$

Multiple Choice

Expression for small'g' is given by

• g = Mm/R

• $g\ =\frac{GR^2}{M}$

  
  

• g = GR/M

• $g\ =\frac{GM}{R^2}$

Multiple Choice

If an object has mass of 10 kg on earth, than what is the mass of the same object on moon?

• 60 kg

• 10 kg

• 1.66 kg

• 98 kg

Multiple Choice

If an object has 20 N weight on earth ,than what will be the weight of the same object on moon?

• 20 N

• 120 N

• 3.33 N

• 10 N

Multiple Choice

Identify a place on earth where your weight will be zero?

• at the poles

• at equator

• mines

• at the center