Students X and Y are siting on a seesaw. Student X has a weight of 400N and student Y has a weight of 600N. The seesaw is in equilibrium. student X student Y Which statement correctly describes why the seesaw is in equilibrium? A The resultant force is zero and the resultant moment is zero. B The resultant force is 200N and the resultant moment is zero. C The sum of the downward forces is zero and the resultant moment is zero. D The total downward force is 1000N and the resultant moment is 200Nm. A O C D O

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Students X and Y are sitting on a seesaw. Student X has a weight of 400N and student Y has a
weight of 600 N. The seesaw is in equilibrium.
student X
student Y
Which statement correctly describes why the seesaw is in equilibrium?
A The resultant force is zero and the resultant moment is zero.
B
The resultant force is 200N and the resultant moment is zero.
The sum of the downward forces is zero and the resultant moment is zero.
D
The total downward force is 100ON and the resultant moment is 200 Nm.
A O
В
نقطة واحدة
A metre rule is balanced on a pivot by three vertical forces, as shown in Fig.
100 cm
40 cm
10 cm
5.0N
weight
of rule
pivot
- 2.0N
Calculate the size of force F.
3N
6N
2N
30N
Transcribed Image Text:Students X and Y are sitting on a seesaw. Student X has a weight of 400N and student Y has a weight of 600 N. The seesaw is in equilibrium. student X student Y Which statement correctly describes why the seesaw is in equilibrium? A The resultant force is zero and the resultant moment is zero. B The resultant force is 200N and the resultant moment is zero. The sum of the downward forces is zero and the resultant moment is zero. D The total downward force is 100ON and the resultant moment is 200 Nm. A O В نقطة واحدة A metre rule is balanced on a pivot by three vertical forces, as shown in Fig. 100 cm 40 cm 10 cm 5.0N weight of rule pivot - 2.0N Calculate the size of force F. 3N 6N 2N 30N
*
نقطة واحدة
A man jumps from a stationary balloon. After falling several hundred metres, he opens his
parachute.
At which position is his kinetic energy greatest?
A just after he jumps from the balloon
B just before he opens his parachute
C just after his parachute opens
D just before he lands
A O
В
C
D O
نقطة واحدة
Two forces P and Q act on an object.
Which diagram shows the resultant of these two forces?
D
resultant
resultant
P.
PA
P
P.
"resultant
resultant
****
A
В
C
Transcribed Image Text:* نقطة واحدة A man jumps from a stationary balloon. After falling several hundred metres, he opens his parachute. At which position is his kinetic energy greatest? A just after he jumps from the balloon B just before he opens his parachute C just after his parachute opens D just before he lands A O В C D O نقطة واحدة Two forces P and Q act on an object. Which diagram shows the resultant of these two forces? D resultant resultant P. PA P P. "resultant resultant **** A В C
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