Assortment questions--I ( projectile , friction,pulley) online Test

A monkey is at rest on a weightless rope which goes over a pulley and is tied to a bunch of bananas at the other end. The weight of the bunch of bananas is exactly the same as that of the monkey. The pulley is frictionless and weightless. The monkey starts to climb up the rope to reach the bananas. As climbs, the distance between him and the bananas will ____.

decrease
increases
Increases by one
remain unchanged
A stretching force of 100N is applied at one end of a spring balance and an equal stretching force is applied at the other end at the same time. The reading on the balance will be ____.
200 N
100 N
400 N
zero
/
12 s-2
4 s-2
10 s-2
zero
If a block of 10 kg is pulled by a constant speed on a rough horizontal surface by a force of 19.6 N, then the coefficient of friction is ____.
0.1
0.2
0.3
0.4
A block of mass m is placed on a rough inclined plane of inclination
kept on the floor of the lift. The coefficient of friction between the block and the inclined plans is
With what acceleration wills the block slide down the inclined plane when the lift falls freely?
Zero
None of these
The height
and the distance
along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by
meter and
meter, where
is in second. The velocity with which the projectile is projected is ____.
8 m/sec
6 m/sec
10 m/sec
Not obtainable from the data
The range of a particle when launched at an angle of
with the horizontal is 1.5 km. What is the range of the projectile when launched at an angle of
to the horizontal?
1.5 km
3.0 km
6.0 km
0.75 km
A cricketer hits a ball with a velocity
at
above the horizontal. How far above the ground it passes over a fielder 50
from the bat (assume the ball is struck very close to the ground) ____.
8.2 m
9.0 m
11.6 m
12.7 m
A particle reaches its highest point when it has covered exactly one half of its horizontal range. The corresponding point on the displacement time graph is characterized by ____.
Negative slope and zero curvature
Zero slope and negative curvature
Zero slope and positive curvature
Positive slope and zero curvature