Two children are carrying a 2.00-m long uniform level board with a mass 5.00 kg, each supporting one end of the board. A 1.00-kg book is resting on the board a distance 1.20 m from one end of the board
What is the force applied by the child that is closer to the book to support the board? A)
29.4 N downward
B)
58.9 N upward
C)
29.4 N upward
D)
30.4 N upward
E)
3.10 N upward
D
You might also like to view...
Astronomers observe unobscured X-rays generated in active galactic nuclei
Indicate whether the statement is true or false
A 580-turn circular coil with an area of 0.0550 m2 is mounted on a rotating frame, which turns at a rate of 17.0 rad/s in the presence of a 0.0400-T uniform magnetic field that is perpendicular to the axis of rotation. What is the instantaneous emf in the coil at the moment that the normal to its plane is at a 50.0° angle to the field?
a. zero b. 21.7 V c. 18.9 V d. 16.6 V e. 0.0751 V
What is the upper limit to the mass of a white dwarf?
A) There is no upper limit. B) There is an upper limit, but we do not yet know what it is. C) 2 solar masses D) 1.4 solar masses E) 1 solar mass
The sulfur hexafluoride molecule consists of one sulfur atom and six fluorine atoms. The atomic masses of sulfur and fluorine are 32.0 u and 19.00 u, respectively. What mass does one mole of this gas have?
a. 32.0 g b. 51.0 g c. 146 g d. 608 g