Question

need of help 10 question let go fo that medal lol

Answer 1

Using a screwdriver to pry off the lid to a paint can is an example of a second class lever.

True

False


Question 2

A machine is something that makes work easier.

True

False


Question 3

The wheel and axle is a modified incline plane.

True

False


Question 4

The number of times a machine multiplies the effort force is?

resistance force

effort distance

mechanical advantage

efficiency


Question 5

Suppose you use a machine that gives you a mechanical advantage of 2 to achieve an output force of 30 Newtons. What must the input force be?

15 N

20 N

40 N

60 N


Question 6

A tape dispenser is an example of which simple machine?

pulley

lever

inclined plane

screw


Question 7

Which of the following is an example of a wheel and axle?

pencil sharpener

block and tackle system

knife

lid on a jar


Question 8

A ramp on a building is the example of which simple machine?

lever

wheel and axle

pulley

inclined plane


Question 9

When movers use ramps to move heavy objects, which of the following are they doing in order to make work easier?

They are increasing the force needed.

They are increasing the amount of work done.

They are decreasing the amount of work done.

They are increasing the distance.

Question 10

Which of the following describes what needs to occur to reduce force and to do the same amount of work?

The distance that the force is exerted needs to decrease.

The mass needs to be reduced.

The distance that the force is exerted needs to increase.

The mass needs to be increased.

Answer 2

@Abhisar

@Toasty58

@undeadDragon26

@YanaSidlinskiy

Answer 3

@Abhisar


@Toasty58


@undeadDragon26


@YanaSidlinskiy

Answer 4

bye then i dont need your help

Answer 5

@Abhisar




@Toasty58




@YanaSidlinskiy

Answer 6

nvm

Answer 7

i go with the first one