Question

(d) absence of inertia
2. An object of mass m held against a
vertical wall by applying horizontal
force F as shown in the figure. The
minimum value of the force Fis
(IIT JEE 1994)
Wall
Fm
(a) Less than mg
(b) Equal to mg
(c) Greater than mg
(d) Cannot determine
3. A vehicle is moving along the posit
x direction, if sudden brake is applied,
then
(a) frictional force acting on the
vehicle is along negative x
direction
(b) frictional force acting on the
vehicle is along positive x direction
(c) no frictional force acts on the
vehicle
(d) frictional force acts in downward
direction.
Please reply answer ​

Answer 1

Answer:

1 :-b

2:-c

3 :- b is the answer