Mechanisms are elements that transmit .................. and movements.
A.
forces
B.
rotations
C.
accelerations
D.
elements
2.
Which is the force that we have to apply to raise an object of 300Kg with one pulley?
A.
3000Kg
B.
300Kg
C.
150Kg
D.
600Kg
3.
Which is the force that we have to apply to raise an object of 300Kg with a moveable pulley?
A.
3000Kg
B.
300Kg
C.
150Kg
D.
600Kg
4.
Which is the force that we have to apply to raise an object of 800Kg with a hoisting tackle composed by six pulleys?
A.
100Kg
B.
400Kg
C.
200Kg
D.
600Kg
5.
Calculate the speed at which the big wheel rotates knowing that the small one rotates at a speed of 10 000rpm and the diameter of the small wheel is 10cm and the big one 50cm
A.
2000 rpm
B.
200 rpm
C.
20000 rpm
D.
200000rpm
6.
If we join one gear of 60 teeth that rotates at 6000 rpm to another gear of 10 teeth. At which speed will it rotate?
A.
1800 rpm
B.
4000 rpm
C.
3600 rpm
D.
20000 rpm
7.
The rack and pinion mechanism transforms a rotatory movement to a.................... one
A.
mixed
B.
up and down movement
C.
rotatory
D.
linear
8.
In the International System of units (S.I) the unit used to measure the rotatory speed is........
