To open a very heavy door, the best place to push the door is:
a. half way between the doorknob and the hinge.
b. at the end of the door where the doorknob is located.
c. torque, not force, is what matters. Hence, it makes no difference where the force is applied.
d. near the bottom of the door.
e. close to the hinges.
b
You might also like to view...
Photoelectric Effect: If the longest wavelength of light that is able to dislodge electrons from a metal is 373 nm, what is the work function of that metal, in electron-volts? (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
Fill in the blank(s) with the appropriate word(s).
A 1200 kg car is traveling at 4.00 m/s and strikes a wall. The 1200 kg car bounces off the wall with a velocity of 4.00 m/s. If the contact with the wall by the car lasts for 0.100 seconds, then the impulse on the car is
A. 12,400 kg m/s. B. 10,200 kg m/s. C. 9,600 kg m/s. D. 8,400 kg m/s. E. 2,900 kg m/s.
Like the Sun and the Moon, the stars appear to move from west to east from one day to the next
Indicate whether the statement is true or false
A 4000-N weight is held suspended in equilibrium by two cables. Cable 1 applies a horizontal force to the right of the object and has a tension T1 . Cable 2 applies a force upward and to the left at an angle of 37.0° to the negative x axis and has a tension T2 . What is the tension T1?
a. 4000 N c. 6250 N b. 6640 N d. 5310 N