Let consider few
examples:
● ‘Inertial force’ the force required get things moving, change
direction stop, like the motor car discussed above. Gravitational force causes objects fall the ground.Basic Electrical Installation Work
86
Acceleration
Velocity
Time
(m/s 2
Example
If aircraft accelerates from velocity 15m/s m/s 4s, calculate its average
acceleration. The
apple fell from the tree Isaac Newton’s head result gravitational
force.
A force may cause stationary object
to move bring moving body to
rest.
The presence force can only detected its effect body.81N since
Force Mass Acceleration (N)
The unit force the newton, symbol commemorate the great
English scientist Sir Isaac Newton (1642–1727).
● ‘Cohesive adhesive force’ the force required hold things
together.
Therefore, apple weighing 1kg will exert force 9.
● ‘Compressive force’ the force pushing things together.
A force may cause stationary object move bring moving body to
rest.
Force
Definition
Force The presence force can only
be detected its effect body.
Example
A 50kg bag cement falls from forklift truck while being lifted storage shelf.Thestandardrateofaccelerationduetogravityisacceptedas9.
● ‘Friction force’ the force which resists prevents the movement
of two surfaces contact. Determine
the force with which the bag will strike the ground:
Force Mass Acceleration (N)
Force 50kg 9.
.
● ‘Tensile force’ the force pulling things apart.81 m/s2
490. For example, number people pushing broken-down motor
car exert force which propels forward, but applying the motor car
brakes applies force the brake drums which slows down stops
the vehicle.81m/s2
.5N
A force can manifest itself many different ways.
Average velocity m/s m/s m/s
Average acceleration
Velocity
Time
m/s
20
4
5 2
Thus, the average acceleration 5m/s2
