Worksheets2 KMK-SP015 : Revision by chapter : Gravitation
Total questions: 20
Worksheet time: 15mins
Which equation represents Newton's law of universal gravitation?
Fg=rGm1m2
Fg=r2Gm1m2
Fg=Gr2m1m2
Fg=m2Gm1r2
The gravitational force between two masses is
always attractive
zero when a third mass placed between them
inversely proportional to their distance
directly proportional to the sum of the two masses
The earth and the moon are attracted to each other by gravitational force. The earth attracts the moon with a force that is:
More than that exerted by the moon
Same as that exerted by the moon
Less than that exerted by the moon
Not related to that exerted by the moon
The gravitation force is inversely related to
distance between masses
product of magnitude of masses
direction of masses
square of distance between masses
The weight of body is due to force of gravitation between body and
earth
other bodies
atmosphere
water
The gravitational field is directed
towards the earth
away from earth
has no direction
in a specific direction making angle with earth
As distance increases, magnitude of gravitational field strength
also increases
decreases
remains constant
may increase or decrease
The Earth may be assumed to be spherical with mass M and radius R, with acceleration of free fall g at its surface. Which equation correctly shows the gravitational acceleration?
g = GM / R2
g = R2 / G M
g = R2 M / G
g = M / G R2
A field that will apply a force to an object with mass is called a
gravitational field
Newton's field
angular rotation field
force field
A field that will apply a force to an object with mass is called a
gravitational field
Newton's field
angular rotation field
force field
In the formula g=Gm1/r2 what is the relationship between g and r?
direct relationship
inverse relationship
inverse square relationship
direct square relationship
An orbiting object has:
negative binding energy
positive total energy
negative gravitational potential energy
1/2 its kinetic energy
Rate this statement: No force due to Earth's gravity acts on astronauts inside the orbiting space station.
always true while in orbit, the astronaut is weightless
sometimes true while in orbit, depending on the angular speed of the space station
always false, centripetal force is needed
