● ‘Friction force’ the force which resists prevents the movement
of two surfaces contact.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.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.
.81 m/s2
490.
● ‘Compressive force’ the force pushing things together.81m/s2
. The
apple fell from the tree Isaac Newton’s head result gravitational
force.
Therefore, apple weighing 1kg will exert force 9.
Average velocity m/s m/s m/s
Average acceleration
Velocity
Time
m/s
20
4
5 2
Thus, the average acceleration 5m/s2
.Thestandardrateofaccelerationduetogravityisacceptedas9.
A force may cause stationary object move bring moving body to
rest.5N
A force can manifest itself many different ways.
Force
Definition
Force The presence force can only
be detected its effect body.
● ‘Tensile force’ the force pulling things apart. Let consider few
examples:
● ‘Inertial force’ the force required get things moving, change
direction stop, like the motor car discussed above.
Example
A 50kg bag cement falls from forklift truck while being lifted storage shelf. Determine
the force with which the bag will strike the ground:
Force Mass Acceleration (N)
Force 50kg 9.
A force may cause stationary object
to move bring moving body to
rest. 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.
The presence force can only detected its effect body. Gravitational force causes objects fall the ground
