Question

Determine the equivalent resultant moment acted at point b by the loading system.

Answer 1

Answer:

Explanation:

Torque or Moment of Force

The rotating effect of a force is called torque or Moment of a force. Mathematically it is defined as the product of force with perpendicular distance from the axis of rotation

τ

=

F

d

sin

θ

Answer and Explanation:

Let us redraw the diagram again

Fig 1

Let us first calculate angle

θ

=

tan

−

1

(

4

3

)

=

53.13

0

Now taking point B as axis of rotation, the equivalent resultant moment acted at point B will be equal to sum of clockwise moment and anticlockwise moment.

τ

n

e

t

=

F

A

×

A

B

−

200

N

.

m

−

F

C

×

B

C

×

sin

θ

τ

n

e

t

=

40

 

N

×

3

 

m

−

200

N

.

m

−

50

N

×

3

 

m

×

sin

(

53.13

0

)

=

−

200

 

N

m