Science Form 2_Chap 8 Force and Motion (Part 2)

What is the unit of force?

• Meter

• Centimeter

• Newton

Moment is a quantity that tells turning effect of a force about turning point. 

• TRUE
• FALSE

What is the unit of moment f force?

• N

• m

• Nm

• N/m

What condition must be met if an object is to be in equilibrium?

• force on it must be balanced

• force on it mus be unbalanced

• resultant force more than 10 N

• resultant turning effect more than 10

Tags

NGSS.MS-PS2-2

What is the moment acting on the seesaw?

• 1.6Nm
• 15Nm
• 16N
• 4Nm

Tags

NGSS.HS-PS2-1

What is the moment produced by the 15 N?

• 15 Nm (clockwise)
• 150 Nm (anti - clockwise)
• 1.5 Nm (anti - clockwise)
• 0.15 Nm (clockwise)

The easiest way to open a heavy door  is by applying the force

• Near the hinges
• In the middle of the door
• At the edge of the door far from the hinges
• At the top of the door

Tags

NGSS.HS-PS2-1

A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?

• 450 N

• 350 N

• 4.5 N

• 200 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The moment of force defined as the product of....

• the force and the acceleration

• the force and the perpendicular distance

• the force and the velocity

• the force and the perpendicular distance from pivot

What is the equation used to calculate pressure?

• pressure= force/mass
• pressure =mass/volume
• pressure=area/force
• pressure=force/area