2022.02.14 21:27III.If the two vectors are parallel to each other, then the magnitude of cross product of two vectors isa) 1VECTORSb) 0 (żero)c) both a and biv.d) undefinedThe magnitude of the vector product of two vectors A and B may be [MAQ]a) greater than ABc) less than ABb) equal to ABd) zeroV.If PxQ=0 and ŌxR=0, then P×R is equal toa) zerob) PRsin 0c) PR cos 0d) PQ tan 0GOLD PACKAGE O7.A force F = 4i -5ĵ+3kacts at a point r = i-2 j+3k . The torque acting about a point7, = 3i - 2)- 3k isb) 30i + 30 +10ka) 42î + 30j- 6kd) 0c) 42i – 30j+ 6k1 8.(AxB)+(BxA) is equal tod) 2(Ã+B)c) 0b) A B²a) 2AB1 9.The area of the parallelogram whose adjacent sides are given by a = 3i – j+ 2k and b= i+4j-6k is[Note: area of the parallelogram is axb]614 squnitsGt) 32 sq unitsc) 573 squnits 7.A force F = 4i– 5î+3& acts at a point =i- 2j+ 3k · The torque acting about a point%3D+12ritrzb) 30i+30 j+10k5 = 3i – 2j- 3k is[ ]%3D|a) 42î + 30j– 6kc) 42î – 30j + 6kd) 0

Given: F⇀=4i^-5j^+3k^r1⇀=i^-2j^+3k^r2⇀=3i^-2j^-3k^

b) PR sin e c) PR Cos 0 d) PQu GOLD PACKAGE O 7. A force F = 4i -5j+3k acts at a point =i-2j+3k. The torque acting about %3D = 3i - 2)-3k is %3D a) 42î + 30j - 6k b) 30i + 30 j+10k d) 0 c) 42i - 30j+ 6k (AXB)+(BxA) is equal to 8.

b) PR sin e c) PR Cos 0 d) PQu GOLD PACKAGE O 7. A force F = 4i -5j+3k acts at a point =i-2j+3k. The torque acting about %3D = 3i - 2)-3k is %3D a) 42î + 30j - 6k b) 30i + 30 j+10k d) 0 c) 42i - 30j+ 6k (AXB)+(BxA) is equal to 8.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 19CQ: What three factors affect the torque created by a force relative to a specific pivot point?

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

2022.02.14 21:27
III.
If the two vectors are parallel to each other, then the magnitude of cross product of two vectors is
a) 1
VECTORS
b) 0 (żero)
c) both a and b
iv.
d) undefined
The magnitude of the vector product of two vectors A and B may be [MAQ]
a) greater than AB
c) less than AB
b) equal to AB
d) zero
V.
If PxQ=0 and ŌxR=0, then P×R is equal to
a) zero
b) PRsin 0
c) PR cos 0
d) PQ tan 0
GOLD PACKAGE O
7.
A force F = 4i -5ĵ+3k
acts at a point r = i-2 j+3k . The torque acting about a point
7, = 3i - 2)- 3k is
b) 30i + 30 +10k
a) 42î + 30j- 6k
d) 0
c) 42i – 30j+ 6k
1 8.
(AxB)+(BxA) is equal to
d) 2(Ã+B)
c) 0
b) A B²
a) 2AB
1 9.
The area of the parallelogram whose adjacent sides are given by a = 3i – j+ 2k and b= i+4j-6k is
[Note: area of the parallelogram is axb]
614 squnits
Gt) 32 sq units
c) 573 squnits

7.
A force F = 4i– 5î+3& acts at a point =i- 2j+ 3k · The torque acting about a point
%3D
+12
ritrz
b) 30i+30 j+10k
5 = 3i – 2j- 3k is
[ ]
%3D
|
a) 42î + 30j– 6k
c) 42î – 30j + 6k
d) 0

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