tceic.com
>> >>

-A()


( )(A )
( 1 35 )? 1.________ ________ ________.? 2.ɧ ________.________. 1/6. 10 kg ________________ N. 10 kg 16.3 3.________________ ̷________.? 4.________ ________ ________֡________ ________ ________.? 5..ԧ ________ ________________.? 6. ________ . 20kg 20 N________ N ________ N .?

20 196 7.ܧ________ ________________ ________________.? 8.________________ ________.()? 9. 6103 N________ N ________ N________ N. 6103 6103 6103 10. 4 N 1 m/s







________ N ________.? 4 ( 3 30 ) 1.٧ A.? B. C.? D.? C 2.? A. B., C., D., BD 3.? A.? B. C.? D. C 4.? A.? B. C.? D. B 5. g=9.8 N/kg A.1 kg 9.8 N B.1 N 9.8 kg C. 1 kg 9.8 N D. 1 N 9.8 kg C 6.,, ,, F=15 N, ?

A., 15 N ? B. 15 N ? C. 15 N ? D. 15 N,,? D 7.է? A.? B.? C.ߧ? D.?







B 8.? A.? B.? C.? D.? B 9.? A.? B.? C.٦? D.٦? A 10. G () F F<G
G F

A.I? B.? C.? D.? C ( 5 10 )? 1. . 2.:, , 3 N 1 N. ?

:? (1). (2). (3) 3 N 1 N. ( 20 )? 1.(8 ) A .?
A B A


F A B A

F

F







2.(4 ) 3 kg , ,.

G=mg=3 kg9.8 N/kg=29.4 N,:

3.(8 ) 1/2 20 kg Ff =G/2=mg/2=98 N,G= mg=196 N. ]( 5 )? .








:

-....doc

-A() -


...)() .doc

()() __/_ A 1.___...


-A(....doc

-A()___... 16 N,, F=___ N,___ N....


...)() .doc

... 4 1 .... A 1.___,_...


()....doc

() - ( 3 , 30 ) 1. ...


.doc

___...) 1,( ) A....


...()....doc

()__... 2.2N,( ) A. 2.2N B....


() .doc

() ___... () 7 12 , A 5 kg...


.doc

___...( ) ) )) A. B....mg () ...


.doc

D., 4,,( ). A. B....


....doc

... 1,( ) A....


-(A....doc

-(A,)___ ...


-(A....doc

-(A,)___ ...


...--(....ppt

2015--()____2015 ...


_.doc

: Ϧ: : 2 : (1),...


()2017.doc

()2017___... () A. B....


...() .doc

... 3 10 ... 1: () A.I...() , ...


()_.doc

()__... 1. 2....? 4. (2011 ,A 26 ...


--A().doc

--A() - 1


2013.doc

2013_...,( ) A.... 1.,...

|
All rights reserved Powered by www.tceic.com
copyright ©right 2010-2021
zhit325@126.com