Directions:Write the letter of the cprrect answer
1. The wedge and the screw are different forms of _______.
A.axle
B.inclined plane
C. Lever
D. Wheel
2. A pulley at the top of a flagpole ia a simple machine that _________.
A.gains force
B.loses force
C.changes direction of force
D.changes speed of force
3. Which of the following statements in true about pulleys
A. A movable pulley gives a gain of force
B. A fixed pulley changes the direction of force
C. Combination of two fixed pulleys is used to gain force
D. The block and the tuckle machine are combination of the two kinds of pulley
4. Which of the following is a second-class lever
A.knife
B.seesaw
C.shovel
D.wheel barrow
5. Which does not belong to the group?
A.ax
B.blade
C.knife
D.screw
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Answer:
1.B
2.B
3.D
4.B
5.B
Explanation:
Verified answer
Answer:
1.B inclined plane
2.B loses force
3.D The block and the tuckle machine are combination of the two kinds of pulley
4.B seesaw
D. screw
Explanation: